Sheave pulley and drum



Jan. 2, 1951 ORZEL 2,536,389

SHEAVE PULLEY AND DRUM Filed April 11, 1946 2 Sheets-Sheet 1 INVENTOR.

ATTORNEY Jan. 2, 1951 P. ORZEL 2,536,389

SHEAVE PULLEY AND DRUM Filed April 11, 1946 2 Sheets-Sheet 2 INVENTOR.

ATTORNEY Patented Jan. 2, 1951 UNITED STATES PATENT OFFICE SHEAVE PULLEY AND DRUM Paul Orzel, Bogota, N. J.

Application April 11, 1946, Serial No. 661,287

20 Claims. 1

This invention relates to pulleys, sheaves, drums and the like, and more particularly to such devices having cold rolled steel parts welded together; though it is noted that in many of the claims the invention is not limited to cold rolled steel or welding.

Objects of the invention are to provide an improved construction having a complete rope sheave rim, fiat belt pulley rim, a V-belt pulley rim, or spiral grooved rope drum, together with spokes, a hub bearing, and connecting gussets of rolled steel sections precut and finished to permit easy assembly and welding without any further machining.

This prefabrication using an endless buttjointed welded rim insures a concentric laterally aligned unit not obtainable by casting with its ever attending chance of core shifting.

In the case of rope sheave rim or spiral grooved rope drum, the sections may be formed by rolling or pressing thin sheet steel of sumcient carbon content to permit hardening simultaneously with the heating process of stress relieving of welds.

Other objects of the invention are to provide an improved means for reinforcing the rims against inward and lateral stresses, and to provide a construction permitting regular spacing of the spokes and to permit easy assembly of the precut parts.

Additional objects of the invention are to efiect accuracy, simplicity and efliciency in devices and to provide an extremely simple device of this kind which is strong, durable, and reliable in operation, and economical to manufacture and assemble.

Still other objects of the invention will appear as the description proceeds; and while herein details of the invention are described in the specification and some of the claims, the invention as described in the broader claims is not limited to these, and many and various changes may be made without departing from the scope of the invention as claimed in the broader claims.

The inventive features for the accomplishment of these and other objects are shown herein in connection with several forms of the invention, each of which briefly stated, includes a hub having longitudinal grooves in its peripheral face, in which are received the webs of spokes comprising flanges and webs connecting the flanges, the inner ends of the webs being welded in said grooves, the inner ends of the flanges being fitted and welded around the hub. Strengthening gussets are fitted and welded on the hub and to and between the inner ends of adjacent spoke flanges. A rim is disposed around the spoke ends; and reinforcement trusses disposed between the outer ends of adjacent spokes have flanges spaced from the rim and welded to the spokes and a web welded to the spoke webs and engaging the inner face of the rim.

In the ccompanying drawing, showing several of many possible embodiments of the invention,

Fig. l is a fragmental side elevation showing one form of the invention;

Fig. 2 is a radial sectional View, partly in elevation taken on the line 2-2 of Fig. 1, looking in the direction of the arrows of said line;

Fig. 3 is a radial sectional view, partly in elevation, taken on the line 33 of Fig. 1, looking in the direction of the arrows of said line;

Fig. 4 shows a section on the line 44' of Fig. 2;

Fig. 5 is a fragmental side elevation showing another form of the invention;

Fig. 6 shows a section taken substantially on the line 6--6 of Fig. 5, looking in the direction of the arrows of said line; and

Figs. 7 and 8 are fragmental radial sectional views, partly in elevation respectively showing parts of modified forms of the invention.

Figs. 1 to 4 show a rope pulley or spirally grooved rope drum comprising a hub 50 having sets of alined longitudinal milled grooves or seats ll extending through the respective ends of the hub and terminating a short distance from the mid-part of the hub. A pair of identical series of radial spokes l2, !2' are mounted on the hub, the spokes I2 of one series being arranged sideby side with the spokes 82a of the other series to form pairs of spokes, the respective spokes being of H-shaped cross-section.

The spoke webs it have their inner ends [5 fitted and welded in said grooves H, the inner ends of the flanges i5 being rounded, as at H, and fitted and welded around the peripheries of the hub at the ends of the grooves. If desired, metal strengthening gussets 68 are fitted and welded on the hub and to and between the edge faces of the inner ends of adjacent flanges It to stiffen the spokes.

An endless annular pulley or drum rim 29 of cold drawn steel is disposed circumferentially around the spoke ends to form an ungrooved margin 2! and parallel rounded circumferential grooves 22 on the outer face and complementary grooves 23 on the inner face. Arcuate bridging reinforcement bridges or trusses 25 of T-shaped.

cross-section are disposed between the outer ends of adjacent spokes of the same series and have their flanges 26 spaced from the rim 2t; and the ends of the flanges 25 are welded to and between the spoke flanges It as at 27 (Fig. 1) and to the spoke web [4, the outer edge of the truss web 28 being formed to fit the inner face of the rim.

Transverse members or sections 38, 3| of L-shaped cross-section and sections or members 7 32., 33 T-shaped cross-section respectively are passed transversely through conforming openings cut "in the trussweb, the members being welded to the truss web and having flanges 3t and 32 spaced from the rim, the other flanges 3|, 33 being contoured or scalloped to fit the inner face of the rim. The scalloped flanges 3| of the mem also "as in Fig. 1.

The outer ends o f the spokewebs Ida are cut away to form U-shaped seats 19, the flanges iGa etee i radi l outwa dl yo d the sea and. an endless annular sheave rim 261a of cold drawn e Of hened; m sseet qn fi d w ded in an ea s 9-. as, ides a a n and, welded to the inner faces of the extended fiafiges enihesoutward v turned. edges i o d e he a et. he a s, 'Theends of the rim may be joined with a butt weld;

Arcuate bridging reinforcement trusses or bridges 25a of T-shaped crosssection disposed between the. ends of adjacent spokes'have the ends 2fl; of.theirzflanges spaced from the rim and; welded to and between the, spok flan s lfiwand. to thespoke webs Mg, the endsof the trusswebs 28a being welded-to the spoke webs [4a, the outer edges/f heruss W bs eins formedto m and.

\velded to the innerface of the rim Ziia.

In theform iof theinventionof Fig. 7 the inner ends of the single series of spokes, I21), thevhub and thegus sets l, are asinEigs. 5and 6.; and a. wide endlessannular sheave pulley. rirnZilU'of cold; olrawn steel is disposed around the spoke. e ds. and wnt qrmp i t n margins 21b. and parallel circumferential V-grooves 22b1on'the' 'Aruate" bridging reinforcement trusses or bridges 25.of T.-sha p ed cross-section are disposed and secured between the ends of adjacent spokes in engagement with therim 29c, asin Figs. 1, 2,L 5-

6; transverse members of L-shaped 36b, 3:] and T-shaped cross section (not shown similar. to the members 32, 33 of Fig, 1) are passed tr a nsversely. through and welded to the bridge.-

outer face. nd complementarygrooves 232) on the web, the fianges il being'spaced iromthe rim,

the other flange 3lb being notched to fit the inner face of the rim b. The notched flanges Q' fifiemem em q fkr ha se i ar weldedto flangesv I6}; of the spokes. The ends. of the rim may bejoined with a butt v weld, and.

rows 2 mav e ile o sp r A fiat endless pulley rim 200 of cold drawn steel which may be welded at the ends with a butt weld is disposed circumferentially around and welded to the spoke ends; and arcuate bridging reinforcement trusses or bridges of T-shaped cross-section 260 are disposed between the ends of adjacent spokes and with their flanges 26c welded to the spoke flanges and webs, and their webs 28c welded to the spoke webs and the rim, as in Figs. 5 and 6.

In all forms of the invention the various parts may be precut and finished to permit assembly and welding without any further machining, and provide a concentric laterally aligned unit not obtainable by casting with its ever attending chance of core shifting.

In the. case. of rope sheave (Figs. 5 and 6) or spiral'gro'oved rope drum (Figs. 1 and 2) the section may be formed by rolling or pressing thin sheet steel of sufficient carbon content to permit ha d ni simu t neously. ith. he, heating proe niri tress.relieving oi welds;

.idsin reinfiorc men srzs, 25a, 25b, 25c) wi perm t. he min mum. umberor spqkesp h m ttns a e e tive dept 0mm. section This: type of reinforcement is practically, in propore. Si al st e th e redfo iper pheralp s ure, h n cnsider ng the span 0irimJandspacing.- .ofz spoke V The membersor sectipnsSD, 3;]:and 3. 33.;form. r ns e s orcements of: the; rim and. are; We d d: tothe im nd. alsntothe bridgin r in: iorcement trusses,whose webs; arepierced. by the. respective sections permitting; relatively: thin. metal rims.

The hubs It:01"..lllcoi;tubulalasectionwith, equally, angular spaced milled slots; Ll, for. the

' projected web endsof; thespokespermits. easy:

'In the pulley of Fig. 8,;the hub,;gussets and,

n e ee j the. poke .IZQ maybe s nE s. 1; i

angularspacing 0t; spokes for assembly, thereby looking all component members. ofi-v the sheave} pulley or druminpositionfgr welding thecom ple ed unit.

A; further; advantageoi welding the projected.-

spoke Web into the milled slot H of the. hub is; that it permits thelspoke toltransmit, peripheral shear tohulgto further aid in-resistingthieshearor, torque. The. gussets. 1.8.. between. flanges of: spokes. further. aid; in resisting strains.

'llheinvention.claimediis;

1. In combination, a hub; widely. regularly,- spaced, spokes secured tolthe .hub; a "rim: around and" engaging the... ends: or: the spokes; and J re-I. inforcement bridges, secured to and :between outen endsportions onlyfoft adjacent spokes. and' em. 55,

gaging the rim, saidurimibeing. continuous: fromside to side, said bridges extending fron rie'ach-v spoke tolthe next and engaging.substantiallyithe entire. inner circumferenceof. the rim "between the spokes. I

2; In combination, a hub; s-pokessecured to the hubandhavingiwebsl in planes radi'al to the hub-and flanges joining the edges oith'webf a rim around: and engaging the ends of..the. spokes; and.reinforcementbridges-secured between outerends. offthe flanges 'of..adjacent3spokes and .engaging the rimv said rim being; continuousfrom. side toside, said bridges extending from. each spoke to the. nextfand" engaging substantially the entire inner circumference of the rim 'be' tween thespokes.

3.; In combination, a. hubhavinglongitudinal; milled grooves. inftha peripheral face thereof radial spokes, of, H-shapedicrossesection having-,5 the, inner. ends or. their. Webs secured'sinv said 52 grooves, the. inner endsx oft theifianges beingg rounded and fitted and welded around the peripheries of the hub at the ends of the grooves; an endless rim of cold drawn steel disposed circumferentially around and secured to the spoke ends; and arcuate bridging reinforcement trusses of T-shaped cross-section disposed between the ends of adjacent spokes and having its flanges spaced from the rim and welded to and between the spoke flanges and to the spoke web, the end of the truss web being welded to the spoke web, the outer edge of the truss web fitting the inner face of the rim.

4. In combination, a hub having longitudinal grooves in its peripheral face; spokes comprising flanges and webs connecting the flanges, the inner ends of the webs being secured in said grooves, the inner ends of the flanges being fitted and secured around the hub; and a rim around the ends of the spokes.

5. In combination, a hub having longitudinal grooves in its peripheral face; spokes comprising flanges and webs connecting the flanges, the inner ends of the webs being welded in said grooves, the inner ends of the flanges being fitted and welded around the hub; strengthening gussets fitted and welded on the hub and to and between the inner ends of adjacent flanges; and a rim disposed around the spoke ends.

6'. In combination, a hub; spokes secured to the hub; a wide annular rim of sheet material disposed around the spoke ends; reinforcement bridges secured between outer ends of adjacent spokes and engaging the rim; and transverse members passed transversely through and secured to the bridges and engaging the inner face of the rim.

7. In combination, a hub; spokes of H-shaped cross-section secured to the hub with the spoke flanges transverse to the hub axis; an endless annular sheave pulley or drum rim of cold drawn steel disposed tangentially around the spoke ends and drawn to form parallel circumferential grooves on the outer face and complementary grooves on the inner face; arcuate bridging reinforcement trusses of T-shaped cross-section disposed between the ends of adjacent spokes having the ends of its flanges spaced from the rim and welded to and between the spoke flanges and to the spoke web the end of the truss web being welded to the spoke web, the outer edge of the truss web being cut to fit to inner face of the rim; transverse members of L-shaped and T-shaped cross section passed transversely through and welded to the bridge web and having flanges spaced from the rim, the other flange being shaped to fit the inner face of the rim, the shaped flanges of the members of L-shaped cross-section being welded to flanges of the spokes.

. 8. In combination, a hub; spokes secured to the hub; an endless annular rim of sheet material disposed around the spoke ends having parallel circumferential spiral grooves on the outer face and complementary grooves on the inner face; reinforcement bridges secured between outer ends of adjacent spokes and engaging the rim; and transverse members passed transversely through and secured to the bridges and formed to fit the inner face of the rim.

9. In combination, a hub; radial spokes of H-shaped cross section secured to the hub, the webs being in planes radial to the hub; an endless annular sheave pulley or drum rim of cold drawn steel disposed around the spoke ends of both series and drawn to form an ungrooved margin and parallel rounded circumferential grooves on the outer face of the rim and com-- plementary grooves on the inner face; arcuate bridging reinforcement trusses of T-shaped cross-section disposed between the ends of adjacent spokes of the same series and having the ends of its flanges spaced from the rim and welded to and between the spoke flanges and to the spoke web, the truss web ends being welded to the spoke webs, the outer edge of the web being cut to fit the inner face of the rim; and transverse members of L-shaped and T-shaped cross section passed transversely through and welded to the bridge web and having flanges spaced from the rim, the other flange being scalloped to fit the inner face of the rim, the bridge web being provided with openings in which said members are received and fit; the scalloped flanges of the members of L-shaped cross-section being welded to flanges of the spokes.

10. In combination, a hub having alined longitudinal milled grooves extending through opposite ends and terminating a short distance from the mid-part of the hub; a pair of series of radial spokes, the spokes of one series being respectively arranged side-by-side with the spokes of the other series to form pairs of spokes, the respective spokes being of H-shaped crosssection and having webs having their inner ends fitted and welded in said grooves, the inner endsof the flanges being rounded and fitted and welded around the peripheries of the hub at the ends of the grooves; metal strengthening gussets fitted and welded on the hub and to and between the edge faces of the inner ends of adjacent flanges to stiffen the spokes; a rim around the ends of the spokes; means mounting the rim on the ends of the spokes; and reinforcement bridges secured between outer ends of adjacent spokes and engaging the inner face of the rim.

11. A sheave comprising a hub having longitudinal milled grooves extending through one end and terminating a short distance from the other end; radial spokes of H-shaped cross-section each having a web and a flange the inner ends of their web being fitted and welded in said grooves, the inner ends of the flanges being mounted and fitted and welded around the peripheries of the hub at the ends of the grooves; the outer ends of the web being cut away to form U-shaped seats, the flanges extending radially outwardly beyond the seats; an endless annular sheave rim of cold drawn steel U-shaped cross section fitted and welded in said seats and having sides engaging and welded to the inner faces of the extended flanges and having outwardly turned edges disposed over the ends of the flanges; the ends of the rim being joined with a butt weld; arcuate bridging reinforcement trusses of T-shapedcrosssection disposed chordally between the ends of adjacent spokes each truss having the ends of its flanges spaced from the rim and welded to and between the spoke flanges and to the spoke web, the end of the truss web being welded to the spoke web, the outer edge of the truss web being cut to fit and welded to the inner face of the rim.

12. In combination a hub; spokes of H -shaped cross-section secured to the hub, the spoke webs being in planes radial to the hub; the outer ends of the webs being cut away to form U -shaped seats, the flanges extending radially outwardly beyond the seats; an endless annular sheave rim of cold drawn steel of U-shaped cross section fitted and welded in said seats and having sides a-saaeac engaging: andi. welded:- the inner faces of; the extended flanges and having outwardly turned edges disposed. over'the ends .of. theflanges; ar cuatebridging reinforcement. trusses of T shaped crosseseotion disposed between. the ends. of: the adjacent; spokes having the ends of. its;.-flanges, spaced from. the: rim and; welded to.- and' betweenthe: spokev flanges: and: to the; spokevweb, the. end of. thetruss webs beingweld'edxto. thespokeawebs; the. outer edge: of the truss web. being formed; to fit. and welded: to the inner face of the rim.

13: In combination, ahub having. longitudinal milled. grooves: extending through. one end andterminatingashort distance fromthe other end; radial spokes. of H shaped: cross-section having the: inner ends. of their web.- fitted and welded: in said? grooves, the inner. ends. of'the. flangesbeingrounded. and fitted and welded aroundzthe. periphcries. of? the hub atthe ends of the grooves; a. rim'mounted around the ends of; the spokes; and reinforcement bridges secured between; outer endSj'Of adjacent spokes and engaging the rim.

14; A- sheave comprising ahub having, longi-. tudinal milled grooves: extending through one end and'terminating a short distance from. the otherend; radial spokes of. H-shapedcross-sec tion having the inner ends of their webs fittedand welded in; said grooves, the inner ends of the flanges beingrounded and fitted and welded around the'peripheriesof the hubat the ends of.

the grooves; metal-strengthening gussets. fitted and: welded-zon-the hub and; to and between the edge faces of, the inner ends ofadjacent flanges to: stiffen: the spokes; a. flat endless pulley; rim or cold drawn. steel. welded at'the endswith a butt weld.- and: disposed tangentially around and welded to the spoke: ends; and arcuate. bridging reinforcement trusses of 'i'x-shaped cross-section disposed between the ends of adjacent spokes and, having the ends. of its flanges spaced from. the rim: and Welded to and between the spoke flanges and to. the spoke web, the end of the truss web being welded to the spoke web, the outer. end: of the truss Web fitting. the inner face of the rim.

15.. In, combination; a .hub having longitudinal grooves in its periphery; spokes of angular crosssection, each. comprising aweh'and: a flange, in.-. ner ends of the webs being projected beyond the flanges and fitted in said grooves, the inner ends of; the flanges being" rounded and secured around the periphery of. thehub; and a rim around the endsofi the spokes.

1,6. Incombination; a hub having longitudinal grooves initsv periphery; spokes of H--shaped cross-section each comprising a web \andfianges, the -inner ends of the webs being fitted: in. said grooves, the. inner; ends of: the. flanges being rounded and= fitted around the periphery of the hub; and a. rimaround the ends of: the spokes;

17. A. combination comprising a hub; spokes secured to, the huband having widely: spaced outerends; a rim of thin material around and engaging the outer ends'of the spokes; and re inforcement bridges secured. toandbetween outer end portions. of adjacent spokes. at; said; outer end" portions only. and. supporting and: engagim the rimisaidrim. being continuous from side to side. said bridges extending from each. spoke.- to the next. and engaging substantially the entire inner circumference. of the rim betweenthe spokes;

18; A con-ibinationv comprising a; hub; spokesv secured to the: hub: and. having: widely, spaced- 1 outerends; a rim of: thin material around and engaging: the outerends .ofthe. spokes; and reinforcement bridges secured to and between outer.

' end portions of adjacent. spokes. at. said" outer endportions. only: and supporting and engaging the rim; the: transverse section offthe bridge bee ing elongatediin a, direction toward the hubsaid rim being continuous. from. side to side, said; bridges extending. from each spoke to the next and engaging substantially the entire inner cit cumference of the rim between the spokes;

19:. A. combination comprising a hub; spokes of: H.-shaped cross section secured to the hub and: having widely spaced outer ends; a rim around and engaging the outer ends of theand: reinforcement bridges: in its. ends secured to. and between outer. end-portionsionly of the: flanges of adjacent spokes and engaging and supporting the rim said rim being. continuousfrom side to. side, said bridges extending from each spoke to the next and engaging substantially the entire inner circumference of the rim betweenthe spokes.

20. A combination comprising a: hub; spokesof H-shaped. cross section secured toithe-huband having widely spaced outer ends; a rimof thin material around and engaging the outer ends of the spokes; the ends of the webs of the spokes being: transverse to the rim; and reinforcement REFERENCES CITED The foiiowing references are of record in the file of this patent: v

UNITED STATES PA'I'ENTS;

Number Name Date:

1,159,555 Venske Nov. 9, 1915 1,200,762. Santrock Oct; 10, 1916 1,212,803 Murray Jan. 16; 1917 1,427,025 Schafly Aug. 22, 1922 1 ,638,702 OlBrien Aug. 9; 1927" FOREIGN PATENTS Number Country Date Great Britain 19:13. 

